Patent
Improved chromakeying system
Avi Sharir,Michael Tamir +1 more
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TLDR
In this article, a chromakeying panel (20) for use in conjunction with a chroma-akeying system (10, 14, 50, 60) is described.Abstract:
A chromakeying panel (20) for use in conjunction with a chromakeying system (10, 14, 50, 60) is disclosed (see figure). The panel (20) comprises a color pattern (40) having plurality of first locations bearing a first color within the color keying spectrum and a plurality of second locations bearing a second color within the color keying spectrum.read more
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Method and apparatus for automatic electronic replacement of billboards in a video image
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Method and apparatus for determining the position of a TV camera for use in a virtual studio
Alexander Steinberg,Livshits Zinovy,Itzhak Wilf,Moshe Nissim,Michael Tamir,Avi Sharir,David Aufhauser +6 more
TL;DR: In this paper, a method of determining the position of a TV camera relative to a patterned panel being viewed by the TV camera is proposed, including the steps of identifying a plurality of edge points of the pattern from the video signal produced by said camera and using these edge points to calculate the perspective of the patterns relative to the camera.
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Camera position sensing system
Avi Sharir,Michael Tamir +1 more
TL;DR: In this article, an auxiliary detection device uses an array of light emitting devices (which may emit infra red radiation and/or may emit light in a coded form) mounted in known positions to provide perspective information for the camera sensing system thereby allowing natural scenery to be used.
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Derivation of studio camera position and motion from the camera image
TL;DR: In this paper, the camera position and motion are derived from the camera image by separating out the background and deriving from a background having a number of areas of hue and brightness different from adjacent areas estimates of movement from one image to the next.
Patent
Television image positioning and combining system
TL;DR: In this paper, a method for producing a background television image which moves corresponding to motion of a camera viewing a foreground scene, the image of which is combined with the background image by chroma-key, thus creating the appearance that both background and foreground are viewed by the same camera, although the background actually originates from separate cameras or recordings.